Divide 30 by half and add 10. What is the final result?
70
Dividing by half is the same as multiplying by 2. 30 divided by 0.5 is 60. 60 + 10 = 70.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
More math riddles
Ida has 14 rabbits and Omar has 5. How many more rabbits does Ida have?
I am the only number that is both the sum and the product of three distinct positive integers. What number am I?
I am a two-digit number. If you multiply my digits together, you get 12. If you add my digits together, you get 7. What number am I?
I am a two-digit multiple of 11. My digits sum up to the number of sides on a square. What number am I?
Half of the 16 icicles on the table are taken away. How many icicles are left on the table?
If you flip me upside down, my value decreases by three. I am a single-digit number higher than five. What number am I?